Старый, старше, самый старый, самый старший

Старый old, старше elder-older, самый старый the oldest, самый старший the eldest

Old-older-the oldest

1) I have watered the trees in my garden.
а)  I haven't watered the trees in my garden.
b) Have I watered the trees in my garden?

2) My little brother has washed up.
a) My little brother hasn't washed up.
b) Has my little brother washed up?

3) My granny has cleaned the carpet.
a) My granny hasn't cleaned the carpet.
b) Has my my granny cleaned the carpet?

4) He has locked his car.
a) He hasn't locked his car.
b) Has he locked his car? 

5) My friends have shopped in Oxford Street.
a)  My friends haven't shopped in Oxford Street.
b) Have  my friends  shopped in Oxford Street?

Britney Jean Spears (born December 2, 1981) is an American pop singer. Her career encompasses chart-topping records, high-profile advertising and a foray into acting. She is now considered an American cultural icon recognized throughout the world,

Перевод
Бритни Джин Спирс (родился 2 декабря 1981) является американская поп-певица. Ее карьера охватывает диаграммы долива записи, громких рекламных и набег на действия. Она в настоящее время считается американский культурной иконой признаны во всем мире,